scholarly journals Response of alumina resistance to trace concentrations of acetone vapors at room temperature

2019 ◽  
Vol 70 (7) ◽  
pp. 122-126
Author(s):  
Ján Ivančo ◽  
Yuriy Halahovets ◽  
Monika Benkovičová ◽  
Matej Mičušík ◽  
Jozef Kollár ◽  
...  
Keyword(s):  
Room Temperature ◽  
Temperature Sensing ◽  
Thermal Pretreatment ◽  
Highly Sensitive ◽  
Pretreatment Temperature ◽  
Plausible Mechanism ◽  
Trace Concentrations ◽  
Acetone Sensor

Abstract The study demonstrates that resistivity of an alumina wafer is highly sensitive to trace concentrations of acetone vapors at room temperature. Though, a thermal pretreatment is necessary to precede the room-temperature sensing of acetone vapors, whilst the sensitiveness increases with the pretreatment temperature. This advocates the alumina being suitable for an adequate acetone sensor in the ppm range. A plausible mechanism of the response is discussed.

Highly sensitive pH dependent acetone sensor based on ultrananocrystalline diamond materials at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 102821-102830 ◽  
Author(s):  
Deepa Kathiravan ◽  
Bohr-Ran Huang ◽  
Adhimoorthy Saravanan ◽  
Gerd Keiser ◽  
Chien-Jui Yeh ◽  
...  
Keyword(s):  
Room Temperature ◽  
Electrochemical Sensing ◽  
Sensing Properties ◽  
Sensor Device ◽  
Ultrananocrystalline Diamond ◽  
Highly Sensitive ◽  
Device Applications ◽  
Ph Dependent ◽  
Acetone Sensor

Diamond-based materials often considered inappropriate for sensor device applications, however these robust materials exhibit unpredictable electrochemical sensing properties.

Room temperature and highly sensitive acetone sensor based on lead sulfide nanosheets

2021 ◽  
Vol 267 ◽  
pp. 115082 ◽  
Author(s):  
Hamed Dehdashti Jahromi ◽  
Mohammad Kazemi ◽  
Mohammad Hossein Sheikhi
Keyword(s):  
Lead Sulfide ◽  
Room Temperature ◽  
Highly Sensitive ◽  
Acetone Sensor

Controlled Growth and Characterization Ag/ZnO Nanotetrapods for Humidity Sensing

2018 ◽  
Vol 21 (7) ◽  
pp. 462-467
Author(s):  
Babak Sadeghi
Keyword(s):  
Room Temperature ◽  
Zinc Complex ◽  
Water Solution ◽  
Particle Morphology ◽  
Quick Response ◽  
Separation System ◽  
Humidity Sensing ◽  
Sensor Material ◽  
Highly Sensitive

Aim and Objective: Ultrafine Ag/ZnO nanotetrapods (AZNTP) have been prepared successfully using silver (I)–bis (oxalato) zinc complex and 1, 3-diaminopropane (DAP) with a phase separation system, and have been injected into a diethyl/water solution. Materials and Methods: This crystal structure and lattice constant of the AZNTP obtained were investigated by means of a SEM, XRD, TEM and UV-vis spectrum. Results: The results of the present study demonstrated the growth and characterization AZNTP for humidity sensing and DAP plays a key role in the determination of particle morphology. AZNTP films with 23 nm in arm diameter have shown highly sensitive, quick response sensor material that works at room temperature.

scholarly journals Gold and ZnO-Based Metal-Semiconductor Network for Highly Sensitive Room-Temperature Gas Sensing

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3815
Author(s):  
Renyun Zhang ◽  
Magnus Hummelgård ◽  
Joel Ljunggren ◽  
Håkan Olin
Keyword(s):  
Solar Cells ◽  
Gas Sensor ◽  
Network Structure ◽  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Gold Particles ◽  
Highly Sensitive ◽  
Semiconductor Electronics ◽  
New Type

Metal-semiconductor junctions and interfaces have been studied for many years due to their importance in applications such as semiconductor electronics and solar cells. However, semiconductor-metal networks are less studied because there is a lack of effective methods to fabricate such structures. Here, we report a novel Au–ZnO-based metal-semiconductor (M-S)n network in which ZnO nanowires were grown horizontally on gold particles and extended to reach the neighboring particles, forming an (M-S)n network. The (M-S)n network was further used as a gas sensor for sensing ethanol and acetone gases. The results show that the (M-S)n network is sensitive to ethanol (28.1 ppm) and acetone (22.3 ppm) gases and has the capacity to recognize the two gases based on differences in the saturation time. This study provides a method for producing a new type of metal-semiconductor network structure and demonstrates its application in gas sensing.

Ultraviolet light-emitting diode-assisted highly sensitive room temperature NO2 gas sensor for low-temperature solution-processed ZnO/TiO2 nanorods decorated with plasmonic Au nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Soon-Hwan Kwon ◽  
Tae-Hyeon Kim ◽  
Sang-Min Kim ◽  
Semi Oh ◽  
Kyoung-Kook Kim
Keyword(s):  
Gas Sensors ◽  
High Performance ◽  
Room Temperature ◽  
Au Nanoparticles ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
No2 Gas Sensor ◽  
Highly Sensitive ◽  
Temperature Solution ◽  
Semiconducting Metal Oxides

Nanostructured semiconducting metal oxides such as SnO2, ZnO, TiO2, and CuO have been widely used to fabricate high performance gas sensors. To improve the sensitivity and stability of gas sensors,...

Sign in / Sign up

Export Citation Format

Share Document